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-rw-r--r--arch/x86/mm/init_64.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 9fbb85c8d930..dc67337d9bf0 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -378,10 +378,18 @@ void __init init_extra_mapping_uc(unsigned long phys, unsigned long size)
378void __init cleanup_highmap(void) 378void __init cleanup_highmap(void)
379{ 379{
380 unsigned long vaddr = __START_KERNEL_map; 380 unsigned long vaddr = __START_KERNEL_map;
381 unsigned long vaddr_end = __START_KERNEL_map + (max_pfn_mapped << PAGE_SHIFT); 381 unsigned long vaddr_end = __START_KERNEL_map + KERNEL_IMAGE_SIZE;
382 unsigned long end = roundup((unsigned long)_brk_end, PMD_SIZE) - 1; 382 unsigned long end = roundup((unsigned long)_brk_end, PMD_SIZE) - 1;
383 pmd_t *pmd = level2_kernel_pgt; 383 pmd_t *pmd = level2_kernel_pgt;
384 384
385 /*
386 * Native path, max_pfn_mapped is not set yet.
387 * Xen has valid max_pfn_mapped set in
388 * arch/x86/xen/mmu.c:xen_setup_kernel_pagetable().
389 */
390 if (max_pfn_mapped)
391 vaddr_end = __START_KERNEL_map + (max_pfn_mapped << PAGE_SHIFT);
392
385 for (; vaddr + PMD_SIZE - 1 < vaddr_end; pmd++, vaddr += PMD_SIZE) { 393 for (; vaddr + PMD_SIZE - 1 < vaddr_end; pmd++, vaddr += PMD_SIZE) {
386 if (pmd_none(*pmd)) 394 if (pmd_none(*pmd))
387 continue; 395 continue;